<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
  <link rel="stylesheet" href="./index.css">
  <style>
    body {
      background-color: #ccc;
    }
    * {
      box-sizing: border-box;
    }
    .container {
      width: 60vw;
      margin-left: 5vw;
      padding-left: 50px;
      padding-right: 50px;
      border: 1px solid yellow;
    }
    .box {
      width: 100%;
      border: 1px solid #333;
      height: 200px;
      background-color: #fff;
    }
    .flex, .row {
      height: 200px;
      // border: 1px solid red;
    }
    .flex div[class*=col],
    .row div[class*=col] {
      height: 100px;
      border: 1px solid #ccc;
    }
    .text {
      width: 100%;
      height: 100%;
      background-color: #95deb7;
    }
  </style>
</head>
<body>

<div class="container">
  <div class="box">
    <div class="flex" data-gutter="lg">
      <div class="col-4"><div class="text">1</div></div>
      <div class="col-4"><div class="text">2</div></div>
      <div class="col-4"><div class="text">3</div></div>
      <div class="flex col-8">
        <div class="col-8"><div class="text">1</div></div>
        <div class="col-8"><div class="text">2</div></div>
        <div class="col-8"><div class="text">3</div></div>
      </div>
      <div class="flex col-4" data-gutter="lg">
        <div class="col-12"><div class="text">1</div></div>
        <div class="col-12"><div class="text">2</div></div>
      </div>
    </div>
  </div>

  <div class="box">
    <div class="flex" data-gutter="lg">
      <div class="col-4"><div class="text">1</div></div>
      <div class="col-4"><div class="text">2</div></div>
      <div class="flex col-12" data-gutter="sm">
        <div class="col-4"><div class="text">1</div></div>
        <div class="col-4"><div class="text">2</div></div>
        <div class="flex col-12">
          <div class="col-4"><div class="text">1</div></div>
          <div class="col-4"><div class="text">2</div></div>
          <div class="col-4"><div class="text">5</div></div>
          <div class="col-4"><div class="text">5</div></div>
          <div class="col-4"><div class="text">5</div></div>
          <div class="col-4"><div class="text">5</div></div>
        </div>
        <div class="col-4"><div class="text">6</div></div>
      </div>
      <div class="col-4"><div class="text">6</div></div>
    </div>
  </div>

  <div class="box">
    <div class="flex" data-gutter="lg">
      <div class="flex col-12" data-gutter="sm">
        <div class="col-4"><div class="text">1</div></div>
        <div class="col-4"><div class="text">2</div></div>
        <div class="flex col-12" data-gutter="sm">
          <div class="col-4"><div class="text">1</div></div>
          <div class="col-4"><div class="text">2</div></div>
          <div class="col-4"><div class="text">5</div></div>
          <div class="col-4"><div class="text">5</div></div>
          <div class="col-4"><div class="text">5</div></div>
          <div class="col-4"><div class="text">5</div></div>
        </div>
        <div class="col-4"><div class="text">6</div></div>
      </div>
      <div class="col-4"><div class="text">4</div></div>
      <div class="col-4"><div class="text">5</div></div>
      <div class="col-4"><div class="text">6</div></div>
    </div>
  </div>
</div>

</body>
</html>
